ref: ae96cfa10904f1d69cd5c4189dc140fc563f960c
dir: /dat.h/
enum {
	Twater,
	Tship,
	Thit,
	Tmiss,
	NTILES,
	Scarrier = 0,
	Sbattleship,
	Scruiser,
	Ssubmarine,
	Sdestroyer,
	NSHIPS,
	OH, /* horizontal */
	OV, /* vertical */
	Waiting0 = 0,
	Watching,
	Ready,
	Outlaying,
	Waiting,
	Playing,
	Boardmargin = 50,
	TW = 16,
	TH = TW,
	MAPW = 17,
	MAPH = MAPW,
	SCRW = Boardmargin+MAPW*TW+Boardmargin,
	SCRH = Boardmargin+MAPH*TH+TH+MAPH*TH+Boardmargin,
	KB = 1024,
};
typedef struct Ship Ship;
typedef struct Map Map;
typedef struct Board Board;
typedef struct Chanpipe Chanpipe;
typedef struct Player Player;
typedef struct Match Match;
typedef struct Msg Msg;
typedef struct Stands Stands;
struct Ship
{
	Point2 p; /* board cell */
	Rectangle bbox;
	int orient;
	int ncells;
	int *hit; /* |hit| = ncells and hitᵢ ∈ {0,1} */
	int sunk;
};
struct Map
{
	char map[MAPW][MAPH];
};
struct Board
{
	RFrame;
	Map;
	Rectangle bbox;
};
struct Chanpipe
{
	Channel *in;
	Channel *out;
	Channel *ctl;
	int fd;
};
struct Player
{
	Map;
	char name[8+1];
	int state;
	Match *battle;
	NetConnInfo *nci;
	Chanpipe io;
	Channel *ctl;
};
struct Match
{
	RWLock;
	int id;
	Player *pl[2];
	Channel *data;
	Channel *ctl;
	Match *prev;
	Match *next;
};
struct Msg
{
	Player *from;
	char *body;
};
struct Stands
{
	Player **seats;
	ulong nused;
	ulong cap;
};